Party Experience Bonus:
2 members in a party: - 10% exp
3 members in a party: - 5% exp
4 members in a party: + 10% exp
5 members in a party: + 15% exp
(when 2 same races in PT , example: BK+BK+SM+MG+SUM)

3 different character classes in a party: + 15% exp
4 different character classes in a party: + 30% exp
5 different character classes in a party: + 50% exp
(when different races in PT , example: BK+ELF+SM+MG+SUM)